Paper Dust Cleaning Device with Axial Mobility During Skew Correction
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Solution Overview
Problem
Conventional image forming apparatuses face issues with paper dust adhering to conveying rollers, which can lead to reduced performance and potential scattering of dust, especially during skew and misalignment corrections, leading to a shortened lifespan of paper dust removing members.
Innovation Solution
A paper dust cleaning device with a paper dust removing member extending in the axial direction of the conveying roller, held by a holder and supported to be movable in the axial direction, effectively contacts and cleans the roller surface without deformation or scattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the paper dust removing member is fixed in position, then the structure is simple, but the member deteriorates during skew and misalignment corrections
Solution Approach 1:
The holder is designed to be movable in the axial direction of the conveying roller, allowing the paper dust removing member to dynamically adjust its position. This mobility prevents deterioration by enabling the member to follow the roller's movement during skew and misalignment corrections, while maintaining a relatively simple overall structure.
2Productivity
If the paper dust removing member contacts the roller surface during corrections, then cleaning is effective, but dust scatters
Solution Approach 1:
The movable holder allows the paper dust removing member to maintain continuous contact with the roller surface during skew and misalignment corrections. This dynamic contact ensures effective cleaning by removing dust at the source, while the controlled movement prevents dust from scattering by keeping the removal process contained.
Solution Approach 2:
The paper dust removing member is positioned to contact the roller surface before dust can scatter during corrections. By preemptively removing dust during the correction process itself, the system prevents dust scattering while maintaining cleaning effectiveness.
3Reliability
If the holder is movable in the axial direction, then member deterioration is prevented, but the structure becomes more complex
Solution Approach 1:
The holder incorporates mobility in the axial direction through a relatively simple mechanical design. This dynamic capability allows the paper dust removing member to follow the roller's axial movement during corrections, preventing deterioration while adding minimal structural complexity compared to a fixed design.
Data Source
AI summary
An image forming apparatus according to the present disclosure includes a paper dust cleaning device configured to remove paper dust adhered to a surface of a conveying roller that conveys a paper sheet in a predetermined conveying direction. The paper dust cleaning device includes a paper dust removing member configured to extend in an axial direction of the conveying roller and come in contact with a surface of the conveying roller; a holder formed in a long shape in the axial direction and configured to hold the paper dust removing member; and a holder support portion configured to hold the holder so that the paper dust removing member comes in contact with the surface of the conveying roller, and configured to support the holder so as to be movable in the axial direction.